Mast for high-tension electric transmission



March 3-0 1926, I 1,578,829

J.' E. JENNINGS MAST FOR HIGH TENSION ELECTRIC TRANSMISSION Filed May 5, 1924 INVENTOR 7 JbH/V JZW/WA/QS.

' ZTTORNEY v Patented Mar. 30, 1926.

UNITEDISTATES 'f mm anivmnes,

- MAST F03 .I-IIGH-TENSION Application filed May 3,

To all; whom it may 0071067 71," 1

Be it known that I, J OHN' E. JENNINGS, a citizen of the United States, residing at New York, in the county ofNew York and State of New York, have invented certain new and useful Improvements" in a Mast for High-Tension Electric Transmission, of which thefollowing is a tull clear; and exact description.

The invention relates to means for anchoring a mast in position, and theobje'cts generally are To provide anchoringineans for thelegs of a mast; to provide anchoring means-for the legs of a mast equipped with a supplemental means arranged on predetermined lines to; meet certainstrains to which the leg's'ofthe mast will be subjected; and to provide anchoring means for the legs ota mast adapted to be in position before the mast is mounted thereon Drawings.

Figure 1 is a vertical elevation partly in section illustrating a mast'mounted in accordance with the principles of the inven' tion; 7 v.

Figure 2, a section through the stub shaft on the'line 22 of Figure 3 and illustrating the stub shaft anchoring means in top plan VIP/V; Y V

Figure 3, a vertical section of the earth fill around the anchor which is shown in elevation;

Figure 4, a planview of the grillage construction at the bottom of the anchoring means. V r V [)cscrigflion.

As shown. 10 designates a grill work mast of the usual construction for supporting high tension electric wires, provided with the usual supporting insulators 11 disposed thereon. These masts are of the construction generally employed and need-no particular reterence, as it will be understood that they are of the usual base construction having the leg members 12, formed of angle steel bars.

The particular anchoring mechanism employed consists of a stub-shaft for eachleg formed of an angle irder 13 extending upwardly from the grill work 14 at the {base thereof, and at a slight inclination irom the ATENT OFFICE. I 0F n iwromi, iri- ELECT-R119 r'RAiist/rissrom 1924;; sem ivofv ae ie.

vertical, which degree of inclination ispredetermined in accordance with the particular dispositionof the mast when in upright position The grill work 14 comprises a rectangular ,t'ramework consisting of channel side bars 15 and 16 having bolted or other- Wise suitably secured thereto channel end bars 17' and 1S and provided with transversely extending centrallydisposed channel bars 19 and 20 between which is riveted a foot flange of the stub shaft beam .13. As best illustrated in Figure 3, the supplementalanchoring meansen'iployed consists of a .pluralityot channel bars, preferably four in: number, 21, 22, 23 and 24, riveted or and a stubsliatt 13and grill work 14 disposed therein with-the grill work resting on the bottom of the excavation; "In positioning the stub shaft, the supplemental supporting bars 21, 22, 23, and24, with their respective cross bars, will be driven into the hard earth 7 at the sides of the excavation; firmly anchors ing the stub shaftsin position at the proper degree of inclination. In applying the sup plemental supporting bars the ends of the "bars are driven in the walls of the excavation at an angle'to bring the inner ends of the bars in position for alinement with rivet holes in the stub shaft. When in position the inner ends of the bars are rigidly secured tothe stub shaft. The loosenedearth generally designated as at 30 and 31 is then filled into the hole and securely packed around the stub shaft and anchoring bars. hen in position, the upper edge'ot the stub shaft beam 13 will project sufiiciently to permit the disposition thereover of the leg beam 12 of the mast, which, When applied, is riveted to'the upper end of the stub shaft beam, as illustrated in Figure 3, and the mast is secured in posltion.

UZa-ims.

. 1. Mast supporting means comprising a base member adapted to be disposed at the bottom of an excavation, a stub shaft extending upwardly therefrom, laterally projecting supplemental anchoring members rigidly secured at one end tosaid stubshaft and adapted to be engaged at the opposite end in the walls of the excavation, anchor- .ing members disposed adjacent-the ends of said supplemental anchoring means, and means for attaching a mast leg to the upper end of said stub shaft.

Mast supporting means comprising a base member adapted to be disposed at the bottom of an excavation, a stub shaft extending upwardly therefrom and at an angle to the vertical, downwardly inclined laterally extending bars rigidly fastened at one end to said stub shaft and adapted to engage the walls of the excavation, anchoring members carried on said bars adjacent the ends at right angles thereto, and means for securing a mast leg to the upper end of said stub shaft. z

3. Anchoring means for a mast comprising a base adapted to be disposed at the bottom of an excavation, a beam secured to said base and extending upwardlytherefrom at an inclination to the vertical, downwardly inclined barsrigidly secured to said beam and projecting laterally therefrom to engage in the walls of the excavation, cross braces rigidly secured on said bars inwardly of the ends thereof, and means for securing the mast leg to the upper end of said beam. 4. Mast supporting means comprising a grili work formed of channeled metal bars adapted to be disposed at the bottom of an excavation, a channeled beam extending up wardly therefrom and secured at its lower end to said grill work, channeled metal bars secured to said beam adjacent its upper end and projecting laterally therefrom at opposite sides thereof for engagement with the walls of the excavation, cross braces riveted to said bars adjacentthe outer ends thereof, and means for securing a mast leg to the upper end of said beam.

Mast supporting means comprising a base grill work adapted to be horizontally disposed at the bottom of an excavation, a stub shaft having a foot extendingtherefrom, means carried by said grill. work for securing said foot therebetween in attaching relation to said grill work, said stub shaft extending upwardly from said grill work at an angle, downwardly inclined laterally extending bars fastened each at one end to said stub shaft at "right angled relation to one another with their free ends adapted for engagement in the Walls of the excavation and anchoring memberson the free ends of said bars and disposed at right angles thereto, and means for securing a mast leg to the upper end of said stub shaft.

J OHN E. J ENNTNGS. 

